Monthly outlook for Seaside, CT: average high 58.5°, average low 45.5°. That is 1.4° below the climate normal for October. Precipitation is expected on 4 days (about 1.4 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 14 October (76.4°), the coolest 19 October (36.6°).
58.5°/45.5°
Average high / low
−1.4°
Below normal
4 / 5
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
61.2°
61.9°
-0.4°
21 October – 30 October
54.1°
58.9°
-2.7°
31 October – 9 November
at normal
56°
—
October records over 66 years
82°8 October 2007All-time high
28.9°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Fishers Island (8 mi).
Mon, 1269° / 48°0.37
69 °
Seaside, Monday, 12 October
Heavy rain. High 69°, low 48°.
Pressure29.74 inHg
Wind13.4 mph NE
Humidity78%
Visibility6.2 mi
Dew point56°
Tue, 1364° / 54°0
64 °
Seaside, Tuesday, 13 October
Overcast. High 64°, low 54°.
Pressure30.03 inHg
Wind7.4 mph SE
Humidity79%
Visibility6.2 mi
Dew point57°
Wed, 1476° / 60°0
76 °
Seaside, Wednesday, 14 October
Partly cloudy. High 76°, low 60°.
Pressure29.80 inHg
Wind7.7 mph W
Humidity71%
Visibility6.2 mi
Dew point64°
Thu, 1560° / 46°0
60 °
Seaside, Thursday, 15 October
Clear. High 60°, low 46°.
Pressure30.12 inHg
Wind12.3 mph NW
Humidity49%
Visibility—
Dew point38°
Fri, 1665° / 42°0.14
65 °
Seaside, Friday, 16 October
Light rain. High 65°, low 42°.
Pressure30.00 inHg
Wind20.6 mph SW
Humidity63%
Visibility—
Dew point40°
Sat, 1766° / 50°0.06
66 °
Seaside, Saturday, 17 October
Light rain. High 66°, low 50°.
Pressure29.71 inHg
Wind21 mph SW
Humidity82%
Visibility—
Dew point57°
Sun, 1848° / 38°0
48 °
Seaside, Sunday, 18 October
Partly cloudy. High 48°, low 38°.
Pressure30.24 inHg
Wind21.6 mph N
Humidity54%
Visibility—
Dew point27°
Mon, 1951° / 37°0
51 °
Seaside, Monday, 19 October
Clear. High 51°, low 37°.
Pressure30.59 inHg
Wind14.7 mph N
Humidity38%
Visibility—
Dew point20°
Tue, 2054° / 40°0
54 °
Seaside, Tuesday, 20 October
Clear. High 54°, low 40°.
Pressure30.50 inHg
Wind8 mph W
Humidity38%
Visibility—
Dew point23°
Wed, 2155° / 44°0
55 °
Seaside, Wednesday, 21 October
Clear. High 55°, low 44°.
Pressure30.42 inHg
Wind10.4 mph SW
Humidity51%
Visibility—
Dew point33°
Thu, 2260° / 54°0
60 °
Seaside, Thursday, 22 October
Overcast. High 60°, low 54°.
Pressure30.18 inHg
Wind19 mph SW
Humidity60%
Visibility—
Dew point44°
Fri, 2362° / 48°0
62 °
Seaside, Friday, 23 October
Partly cloudy. High 62°, low 48°.
Pressure29.97 inHg
Wind16.4 mph NW
Humidity61%
Visibility—
Dew point46°
Sat, 2449° / 41°0
49 °
Seaside, Saturday, 24 October
Clear. High 49°, low 41°.
Pressure30.03 inHg
Wind16.6 mph NW
Humidity49%
Visibility—
Dew point28°
Sun, 2550° / 38°0.03
50 °
Seaside, Sunday, 25 October
Light rain. High 50°, low 38°.
Pressure30.33 inHg
Wind12.6 mph NW
Humidity47%
Visibility—
Dew point24°
Mon, 2648° / 40°0.03
48 °
Seaside, Monday, 26 October
Light rain. High 48°, low 40°.
Pressure30.53 inHg
Wind11.3 mph NW
Humidity71%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2758° / 47°0.15
58 °
Seaside, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high58°
Average low47°
Average precipitation0.15 in
Chance of precipitation25%
Record high75° (1963)
Record low31° (1976)
Wed, 2858° / 46°0.16
58 °
Seaside, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high58°
Average low46°
Average precipitation0.16 in
Chance of precipitation32%
Record high74° (2023)
Record low31° (1976)
Thu, 2957° / 45°0.17
57 °
Seaside, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high57°
Average low45°
Average precipitation0.17 in
Chance of precipitation23%
Record high73° (1971)
Record low32° (1965)
Fri, 3056° / 44°0.17
56 °
Seaside, Friday, 30 October
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.17 in
Chance of precipitation25%
Record high69° (1971)
Record low33° (2020)
Sat, 3157° / 45°0.08
57 °
Seaside, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low45°
Average precipitation0.08 in
Chance of precipitation23%
Record high72° (2024)
Record low29° (2020)
Sun, 0158° / 46°0.11
58 °
Seaside, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high58°
Average low46°
Average precipitation0.11 in
Chance of precipitation32%
Record high74° (2024)
Record low36° (1968)
Mon, 0258° / 46°0.09
58 °
Seaside, Monday, 2 November
Climate normal for this date — 60-year average.
Average high58°
Average low46°
Average precipitation0.09 in
Chance of precipitation30%
Record high68° (2022)
Record low30° (1965)
Tue, 0358° / 45°0.17
58 °
Seaside, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high58°
Average low45°
Average precipitation0.17 in
Chance of precipitation30%
Record high70° (1990)
Record low32° (2002)
Wed, 0456° / 45°0.04
56 °
Seaside, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.04 in
Chance of precipitation23%
Record high70° (1975)
Record low33° (2013)
Thu, 0556° / 45°0.15
56 °
Seaside, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.15 in
Chance of precipitation38%
Record high69° (2022)
Record low33° (1965)
Fri, 0655° / 44°0.13
55 °
Seaside, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.13 in
Chance of precipitation35%
Record high71° (2024)
Record low32° (2012)
Sat, 0755° / 43°0.08
55 °
Seaside, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.08 in
Chance of precipitation25%
Record high73° (2022)
Record low30° (1962)
Sun, 0854° / 42°0.12
54 °
Seaside, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.12 in
Chance of precipitation30%
Record high71° (2020)
Record low30° (2019)
Mon, 0954° / 42°0.09
54 °
Seaside, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.09 in
Chance of precipitation20%
Record high71° (1975)
Record low26° (2019)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Seaside, CT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Seaside, CT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.